EP 2146848 B1 20190911 - HIGH IMPACT POLYMER INTERLAYERS
Title (en)
HIGH IMPACT POLYMER INTERLAYERS
Title (de)
POLYMERZWISCHENSCHICHTEN VON HOHER SCHLAGFESTIGKEIT
Title (fr)
COUCHES INTERMÉDIAIRES POLYMÈRES À HAUTE RÉSISTANCE AUX CHOCS
Publication
Application
Priority
- US 2008061690 W 20080425
- US 74254707 A 20070430
Abstract (en)
[origin: US2008268270A1] The present invention provides multiple poly(vinyl butyral) layer interlayers that can be used in multiple layer glass panel type applications that require a high level of impact protection, for example in hurricane protection applications or in bullet proof glass applications. This effect is achieved by forming a poly(vinyl butyral) interlayer that has a relatively stiff poly(vinyl butyral) inner layer disposed between two relatively soft outer poly(vinyl butyral) layers, where the stiffness difference is achieved by a plasticizer differential that is achieved at least in substantial part by a residual hydroxyl content difference among the poly(vinyl butyral) layers.
IPC 8 full level
B29C 48/08 (2019.01); B29C 48/18 (2019.01); B32B 17/10 (2006.01); B32B 27/30 (2006.01)
CPC (source: EP KR US)
B29C 48/08 (2019.01 - EP KR US); B29C 48/18 (2019.01 - EP KR US); B32B 17/10761 (2013.01 - EP KR US); B32B 27/08 (2013.01 - KR US); B32B 27/22 (2013.01 - KR US); B32B 27/30 (2013.01 - EP US); B32B 27/304 (2013.01 - KR US); B32B 27/306 (2013.01 - KR US); B32B 27/40 (2013.01 - KR US); B32B 27/42 (2013.01 - KR US); C08K 5/0016 (2013.01 - EP KR US); B32B 2419/00 (2013.01 - KR US); B32B 2605/00 (2013.01 - KR US); Y10T 428/31913 (2015.04 - EP US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
DOCDB simple family (publication)
US 2008268270 A1 20081030; AU 2008247894 A1 20081113; BR PI0810707 A2 20141021; CA 2682963 A1 20081113; CN 101678660 A 20100324; CN 101678660 B 20151202; EP 2146848 A2 20100127; EP 2146848 B1 20190911; IL 201762 A0 20100616; JP 2010525967 A 20100729; KR 20100016323 A 20100212; MX 2009011731 A 20091218; NO 20093093 L 20100129; RU 2009136519 A 20110610; RU 2469869 C2 20121220; TW 200906620 A 20090216; TW I438090 B 20140521; US 2013075949 A1 20130328; US 2016096347 A1 20160407; US 9248599 B2 20160202; WO 2008137367 A2 20081113; WO 2008137367 A3 20091008
DOCDB simple family (application)
US 74254707 A 20070430; AU 2008247894 A 20080425; BR PI0810707 A 20080425; CA 2682963 A 20080425; CN 200880014039 A 20080425; EP 08769194 A 20080425; IL 20176209 A 20091026; JP 2010506548 A 20080425; KR 20097023277 A 20080425; MX 2009011731 A 20080425; NO 20093093 A 20091002; RU 2009136519 A 20080425; TW 97114517 A 20080421; US 2008061690 W 20080425; US 201213683552 A 20121121; US 201514965446 A 20151210